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3-5
Cisco 800 Series Routers Hardware Installation Guide
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Chapter 3 Troubleshooting
Problems After Router Is Running
Problems After Router Is Running
Table 3-3 lists problems that could occur after the router has been up and running for a while.
• Problem with ISDN
line.
• Contact your telephone service provider to
determine if there is a problem with your
line.
• If the problem continues, call your Cisco
reseller.
Table 3-2 Problems After First Startup (continued)
Symptom Problem Solutions
Table 3-3 Problems After Router Is Running
Symptom Problem Solutions
Problems with Ethernet link.
(On Cisco 801, Cisco 802,
and Cisco 802 IDSL routers,
the LINK LED on the back
panel blinks. On Cisco 803
and 804 routers, the LKØ,
LK1, LK2, or LK3 LED on the
front panel blinks. On the
Cisco 804 IDSL router, the
ETHERNET 1, 2, 3, or 4 LED
on the front panel blinks.)
• One of the
following
cable-related
problems:
–
Disconnected
cable.
–
Damaged
cable.
Perform the following tasks in the following
order:
• Make sure the connectors at both ends
of the cable are securely connected.
• Make sure the cable is not physically
damaged. If it is, replace it.
• Improperly
functioning NIC on
server, PC, or
workstation.
• Run the NIC diagnostic supplied by the
vendor to make sure it is functioning
properly. If it is not, replace it.
• If the problem continues, call your
Cisco reseller.
Connection to an Ethernet
device is intermittent or lost.
(On Cisco 801, 802, and 802
IDSL routers, the LINK LED
on the back panel is off. On
Cisco 803 and 804 routers, the
LKØ, LK1, LK2, or LK3 LED
on the front panel is off. On the
Cisco 804 IDSL router, the
ETHERNET 1, 2, 3, or 4 LED
on the front panel is off.)
• A cable-related
problem:
–
Disconnected
cable.
–
Damaged
cable.
• Make sure the connectors at both ends
of the cable are securely connected.
• Make sure the cable is not physically
damaged. If it is damaged, replace it.
• Improperly
functioning NIC on
server, PC, or
workstation.
• Run the NIC diagnostic supplied by the
vendor to determine if it is functioning
properly. If it is not, replace it.